Abstract: A low-profile modular sound system comprises a completely self contained high fidelity speaker system which may be easily installed in the supporting gridwork for a suspended ceiling in place of a conventional acoustic ceiling tile. Each of a pair of speakers, including a woofer and tweeter, is installed in a rectangular mounting panel of a size and shape corresponding to a ceiling tile. A shallow rear housing is attached to the mounting panel to enclose the rear portions of the speakers and any other system components, such as a balance control. A single electrical connector attached to the outside of the housing provides an interconnectiion between the speaker leads and the external source of power for the speakers.